官方demo：https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=11_1
1、首先下载官方demo，将cert/、logs/ 、example/log.php放在libraries/Wxpay/目录下
2、在ci配置文件config/ 下新建 wxpay_config.php 并完成配置。
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* TODO: 修改这里配置为您自己申请的商户信息
* 微信公众号信息配置
*
* APPID：绑定支付的APPID（必须配置，开户邮件中可查看）
*
* MCHID：商户号（必须配置，开户邮件中可查看）
*
* KEY：商户支付密钥，参考开户邮件设置（必须配置，登录商户平台自行设置）
* 设置地址：https://pay.weixin.qq.com/index.php/account/api_cert
*
* APPSECRET：公众帐号secert（仅JSAPI支付的时候需要配置， 登录公众平台，进入开发者中心可设置），
* 获取地址：https://mp.weixin.qq.com/advanced/advanced?action=dev&t=advanced/dev&token=2005451881&lang=zh_CN
* @var string
*/
$config['appid'] = '';
$config['mch_id'] = '';
$config['apikey'] = '';
$config['appsecret'] = '';
$config['sslcertPath'] = APPPATH.'libraries/Wxpay/cert/apiclient_cert.pem';
$config['sslkeyPath'] = APPPATH.'libraries/Wxpay/cert/apiclient_key.pem';
3、在libraries/ 下新建 CI_Wechatpay.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
// 加载微信支付
require_once APPPATH.'libraries/Wxpay/Wechatpay.php';
/**
* 为CI扩展微信支付类
*/
class CI_Wechatpay extends WechatPay {
}
4、在libraries/Wxpay 下新建Wechatpay.php 这是前辈封装好的。尽情的享用吧
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class WechatPay {
const TRADETYPE_JSAPI = 'JSAPI',TRADETYPE_NATIVE = 'NATIVE',TRADETYPE_APP = 'APP';
const URL_UNIFIEDORDER = "https://api.mch.weixin.qq.com/pay/unifiedorder";
const URL_ORDERQUERY = "https://api.mch.weixin.qq.com/pay/orderquery";
const URL_CLOSEORDER = 'https://api.mch.weixin.qq.com/pay/closeorder';
const URL_REFUND = 'https://api.mch.weixin.qq.com/secapi/pay/refund';
const URL_REFUNDQUERY = 'https://api.mch.weixin.qq.com/pay/refundquery';
const URL_DOWNLOADBILL = 'https://api.mch.weixin.qq.com/pay/downloadbill';
const URL_REPORT = 'https://api.mch.weixin.qq.com/payitil/report';
const URL_SHORTURL = 'https://api.mch.weixin.qq.com/tools/shorturl';
const URL_MICROPAY = 'https://api.mch.weixin.qq.com/pay/micropay';
/**
* 错误信息
*/
public $error = null;
/**
* 错误信息XML
*/
public $errorXML = null;
/**
* 微信支付配置数组
* appid 公众账号appid
* mch_id 商户号
* apikey 加密key
* appsecret 公众号appsecret
* sslcertPath 证书路径(apiclient_cert.pem)
* sslkeyPath 密钥路径(apiclient_key.pem)
*/
private $_config;
/**
* @param $config 微信支付配置数组
*/
public function __construct($config) {
$this->_config = $config;
}
/**
* JSAPI获取prepay_id
* @param $body
* @param $out_trade_no
* @param $total_fee
* @param $notify_url
* @param $openid
* @return null
*/
public function getPrepayId($body,$out_trade_no,$total_fee,$notify_url,$openid) {
$data = array();
$data["nonce_str"] = $this->get_nonce_string();
$data["body"] = $body;
$data["out_trade_no"] = $out_trade_no;
$data["total_fee"] = $total_fee;
$data["spbill_create_ip"] = $_SERVER["REMOTE_ADDR"];
$data["notify_url"] = $notify_url;
$data["trade_type"] = self::TRADETYPE_JSAPI;
$data["openid"] = $openid;
$result = $this->unifiedOrder($data);
if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
return $result["prepay_id"];
} else {
$this->error = $result["return_code"] == "SUCCESS" ? $result["err_code_des"] : $result["return_msg"];
$this->errorXML = $this->array2xml($result);
return null;
}
}
private function get_nonce_string() {
return substr(str_shuffle("abcdefghijklmnopqrstuvwxyz0123456789"),0,32);
}
/**
* 统一下单接口
*/
public function unifiedOrder($params) {
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["device_info"] = (isset($params['device_info'])&&trim($params['device_info'])!='')?$params['device_info']:null;
$data["nonce_str"] = $this->get_nonce_string();
$data["body"] = $params['body'];
$data["detail"] = isset($params['detail'])?$params['detail']:null;//optional
$data["attach"] = isset($params['attach'])?$params['attach']:null;//optional
$data["out_trade_no"] = isset($params['out_trade_no'])?$params['out_trade_no']:null;
$data["fee_type"] = isset($params['fee_type'])?$params['fee_type']:'CNY';
$data["total_fee"] = $params['total_fee'];
$data["spbill_create_ip"] = $params['spbill_create_ip'];
$data["time_start"] = isset($params['time_start'])?$params['time_start']:null;//optional
$data["time_expire"] = isset($params['time_expire'])?$params['time_expire']:null;//optional
$data["goods_tag"] = isset($params['goods_tag'])?$params['goods_tag']:null;
$data["notify_url"] = $params['notify_url'];
$data["trade_type"] = $params['trade_type'];
$data["product_id"] = isset($params['product_id'])?$params['product_id']:null;//required when trade_type = NATIVE
$data["openid"] = isset($params['openid'])?$params['openid']:null;//required when trade_type = JSAPI
$result = $this->post(self::URL_UNIFIEDORDER, $data);
return $result;
}
private function post($url, $data,$cert = false) {
$data["sign"] = $this->sign($data);
$xml = $this->array2xml($data);
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
if($cert == true){
//使用证书：cert 与 key 分别属于两个.pem文件
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT, $this->_config['sslcertPath']);
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY, $this->_config['sslkeyPath']);
}
$content = curl_exec($ch);
$array = $this->xml2array($content);
return $array;
}
/**
* 数据签名
* @param $data
* @return string
*/
private function sign($data) {
ksort($data);
$string1 = "";
foreach ($data as $k => $v) {
if ($v && trim($v)!='') {
$string1 .= "$k=$v&";
}
}
$stringSignTemp = $string1 . "key=" . $this->_config["apikey"];
$sign = strtoupper(md5($stringSignTemp));
return $sign;
}
private function array2xml($array) {
$xml = "<xml>" . PHP_EOL;
foreach ($array as $k => $v) {
if($v && trim($v)!='')
$xml .= "<$k><![CDATA[$v]]></$k>" . PHP_EOL;
}
$xml .= "</xml>";
return $xml;
}
private function xml2array($xml) {
$array = array();
$tmp = null;
try{
$tmp = (array) simplexml_load_string($xml);
}catch(Exception $e){}
if($tmp && is_array($tmp)){
foreach ( $tmp as $k => $v) {
$array[$k] = (string) $v;
}
}
return $array;
}
/**
* 扫码支付(模式二)获取支付二维码
* @param $body
* @param $out_trade_no
* @param $total_fee
* @param $notify_url
* @param $product_id
* @return null
*/
public function getCodeUrl($body,$out_trade_no,$total_fee,$notify_url,$product_id){
$data = array();
$data["nonce_str"] = $this->get_nonce_string();
$data["body"] = $body;
$data["out_trade_no"] = $out_trade_no;
$data["total_fee"] = $total_fee;
$data["spbill_create_ip"] = $_SERVER["SERVER_ADDR"];
$data["notify_url"] = $notify_url;
$data["trade_type"] = self::TRADETYPE_NATIVE;
$data["product_id"] = $product_id;
$result = $this->unifiedOrder($data);
if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
return $result["code_url"];
} else {
$this->error = $result["return_code"] == "SUCCESS" ? $result["err_code_des"] : $result["return_msg"];
return null;
}
}
/**
* 查询订单
* @param $transaction_id
* @param $out_trade_no
* @return array
*/
public function orderQuery($transaction_id,$out_trade_no){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["transaction_id"] = $transaction_id;
$data["out_trade_no"] = $out_trade_no;
$data["nonce_str"] = $this->get_nonce_string();
$result = $this->post(self::URL_ORDERQUERY, $data);
return $result;
}
/**
* 关闭订单
* @param $out_trade_no
* @return array
*/
public function closeOrder($out_trade_no){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["out_trade_no"] = $out_trade_no;
$data["nonce_str"] = $this->get_nonce_string();
$result = $this->post(self::URL_CLOSEORDER, $data);
return $result;
}
/**
* 申请退款 - 使用商户订单号
* @param $out_trade_no 商户订单号
* @param $out_refund_no 退款单号
* @param $total_fee 总金额（单位：分）
* @param $refund_fee 退款金额（单位：分）
* @param $op_user_id 操作员账号
* @return array
*/
public function refund($out_trade_no,$out_refund_no,$total_fee,$refund_fee,$op_user_id){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["nonce_str"] = $this->get_nonce_string();
$data["out_trade_no"] = $out_trade_no;
$data["out_refund_no"] = $out_refund_no;
$data["total_fee"] = $total_fee;
$data["refund_fee"] = $refund_fee;
$data["op_user_id"] = $op_user_id;
$result = $this->post(self::URL_REFUND, $data,true);
return $result;
}
/**
* 申请退款 - 使用微信订单号
* @param $out_trade_no 商户订单号
* @param $out_refund_no 退款单号
* @param $total_fee 总金额（单位：分）
* @param $refund_fee 退款金额（单位：分）
* @param $op_user_id 操作员账号
* @return array
*/
public function refundByTransId($transaction_id,$out_refund_no,$total_fee,$refund_fee,$op_user_id){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["nonce_str"] = $this->get_nonce_string();
$data["transaction_id"] = $transaction_id;
$data["out_refund_no"] = $out_refund_no;
$data["total_fee"] = $total_fee;
$data["refund_fee"] = $refund_fee;
$data["op_user_id"] = $op_user_id;
$result = $this->post(self::URL_REFUND, $data,true);
return $result;
}
/**
* 下载对账单
* @param $bill_date 下载对账单的日期，格式：20140603
* @param $bill_type 类型
* @return array
*/
public function downloadBill($bill_date,$bill_type = 'ALL'){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["bill_date"] = $bill_date;
$data["bill_type"] = $bill_type;
$data["nonce_str"] = $this->get_nonce_string();
$result = $this->post(self::URL_DOWNLOADBILL, $data);
return $result;
}
/**
* 获取js支付使用的第二个参数
*/
public function get_package($prepay_id) {
$data = array();
$data["appId"] = $this->_config["appid"];
$data["timeStamp"] = time();
$data["nonceStr"] = $this->get_nonce_string();
$data["package"] = "prepay_id=$prepay_id";
$data["signType"] = "MD5";
$data["paySign"] = $this->sign($data);
return $data;
}
/**
* 获取发送到通知地址的数据(在通知地址内使用)
* @return 结果数组，如果不是微信服务器发送的数据返回null
* appid
* bank_type
* cash_fee
* fee_type
* is_subscribe
* mch_id
* nonce_str
* openid
* out_trade_no 商户订单号
* result_code
* return_code
* sign
* time_end
* total_fee 总金额
* trade_type
* transaction_id 微信支付订单号
*/
public function get_back_data() {
$xml = file_get_contents("php://input");
$data = $this->xml2array($xml);
if ($this->validate($data)) {
return $data;
} else {
return null;
}
}
/**
* 验证数据签名
* @param $data 数据数组
* @return 数据校验结果
*/
public function validate($data) {
if (!isset($data["sign"])) {
return false;
}
$sign = $data["sign"];
unset($data["sign"]);
return $this->sign($data) == $sign;
}
/**
* 响应微信支付后台通知
* @param $return_code 返回状态码 SUCCESS/FAIL
* @param $return_msg 返回信息
*/
public function response_back($return_code="SUCCESS", $return_msg=null) {
$data = array();
$data["return_code"] = $return_code;
if ($return_msg) {
$data["return_msg"] = $return_msg;
}
$xml = $this->array2xml($data);
print $xml;
}
}
5、接下来我是在控制器 controller/Wxpay.php 文件下封装个方法 这里也用到了log.php ，注意看使用方法。在调bug时非常好用。
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Wxpay extends CI_Controller { /** * Index Page for this controller. * * Maps to the following URL * http://example.com/index.php/welcome * - or - * http://example.com/index.php/welcome/index * - or - * Since this controller is set as the default controller in * config/routes.php, it's displayed at http://example.com/ * * So any other public methods not prefixed with an underscore will * map to /index.php/welcome/<method_name> * @see https://codeigniter.com/user_guide/general/urls.html */ public function __construct()
{
parent::__construct();
$this->load->config('config');
$this->load->helper('url');
$this->load->model('Consult_model');
$this->load->model('Payment_model');
} public function index() { $base_url = $this->config->item('base_url'); $to_id = "26"; $consult_info = $this->Consult_model->consult_info(array('consult_id'=>$to_id)); print_r($consult_info); } /**
* wxPay 微信支付接口
* @param $Id 订单ID
* @author lyne
*/
public function wxPay(){
$base_url = $this->config->item('base_url');
require_once (APPPATH.'libraries/Wxpay/log.php');
//初始化日志
$logHandler= new CLogFileHandler(APPPATH."libraries/Wxpay/logs/".date('Y-m-d').'.log');
Log::Init($logHandler, 15);
// 调用微信扫码支付接口配置信息
$this->load->config('wxpay_config');
$wxconfig['appid']=$this->config->item('appid');
$wxconfig['mch_id']=$this->config->item('mch_id');
$wxconfig['apikey']=$this->config->item('apikey');
$wxconfig['appsecret']=$this->config->item('appsecret');
$wxconfig['sslcertPath']=$this->config->item('sslcertPath');
$wxconfig['sslkeyPath']=$this->config->item('sslkeyPath');
//由于此类库构造函数需要传参，我们初始化类库就传参数给他吧
$this->load->library('CI_Wechatpay',$wxconfig);
$o = array('goods_name'=>$_GET['goods_name'],'id'=>$_GET['id'],'order_code'=>$_GET['order_code'],'order_amount'=>$_GET['order_amount'],'goods_id'=>$_GET['goods_id']);
$param['body']=$o['goods_name']; //"商品名称（自行看文档具体填什么）";
$param['attach']=$o['id']; // "我有个参数要传我就穿了个id过来，这里不要有空格避免出错";
$param['detail']=$o['order_code']; //"我填了商品名称加订单号";
$param['out_trade_no']=$o['order_code']; //"商户订单号";
$param['total_fee']=$o['order_amount']*100; //"金额，记得乘以100，微信支付单位默认分";//如$total_fee*100
$param["spbill_create_ip"] =$_SERVER['REMOTE_ADDR'];//客户端IP地址
$param["time_start"] = date("YmdHis");//请求开始时间
$param["time_expire"] = date("YmdHis", time() + 600);//请求超时时间 10分钟
$param["goods_tag"] = urldecode('运费：') . "0"; //商品标签，自行填写
$param["notify_url"] = $base_url."wxpay/wxnotify"; //自行定义异步通知url
$param["trade_type"] = "NATIVE";//扫码支付模式二
$param["product_id"] = $o['goods_id']; //正好有产品id就传了个，看文档说自己定义
//调用统一下单API接口
$result=$this->ci_wechatpay->unifiedOrder($param);//这里可以加日志输出，
// 写入日志
log::debug(json_encode($result));
//成功（return_code和result_code都为SUCCESS）就会返回含有带支付二维码链接的数据
$data=array();
if (isset($result["code_url"]) && !empty($result["code_url"])) {//二维码图片链接
$data['wxurl'] = $result["code_url"];
//这里传递商户订单号到扫码视图，是因为我想做跳转，根据商户号去查询订单是否支付成功，如果成功了就跳转，定时轮询微信服务器（这个谁有好的方法可以分享给我啊，表示感谢啦）
$data['orderno'] = $param['out_trade_no'];
// 写入日志
echo 'http://paysdk.weixin.qq.com/example/qrcode.php?data='.urlencode($data['wxurl']);
//echo '<img alt="模式二扫码支付" src="http://paysdk.weixin.qq.com/example/qrcode.php?data='.urlencode($data['wxurl']).'" width="150"/>';
/*$this->assign('time_expire',strtotime($param["time_expire"])); //订单失效时间
$this->assign('order_no',$data['orderno']);
$this->assign('wxurl',urlencode($data['wxurl'])); // 获取到的二维码地址
$this->display('wxpay/index.html');*/
}
}
//微信异步通知
function wxnotify(){
//$postStr = file_get_contents("php://input");//因为很多都设置了register_globals禁止,不能用$GLOBALS["HTTP_RAW_POST_DATA'] //这部分困扰了好久用上面这种一直接受不到数据，或者接受了解析不正确，最终用下面的正常了，有哪位愿意指点的可以告知一二
//$xml = $GLOBALS['HTTP_RAW_POST_DATA'];//这个需要开启;always_populate_raw_post_data = On
$xml = isset($GLOBALS['HTTP_RAW_POST_DATA']) ? $GLOBALS['HTTP_RAW_POST_DATA'] : file_get_contents("php://input");
$this->load->config('wxpay_config');
$wxconfig['appid']=$this->config->item('appid');
$wxconfig['mch_id']=$this->config->item('mch_id');
$wxconfig['apikey']=$this->config->item('apikey');
$wxconfig['appsecret']=$this->config->item('appsecret');
$wxconfig['sslcertPath']=$this->config->item('sslcertPath');
$wxconfig['sslkeyPath']=$this->config->item('sslkeyPath');
//$this->load->library('Wechatpay',$wxconfig);
$this->load->library('CI_Wechatpay',$wxconfig);
libxml_disable_entity_loader(true);
$array= json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
//log::debug($xml);
//log::debug(json_encode($array));
if($array!=null){
$out_trade_no = $array['out_trade_no'];
$total_fee = $array['total_fee'];
$arr = explode("to",$out_trade_no); $to_id = $arr[1]; $service_id = $arr[2]; if($service_id==1){ $consult_info = $this->Consult_model->consult_info(array('consult_id'=>$to_id)); $this->Payment_model->add_payment(array('user_id'=>$consult_info['user_id'],'service_id'=>$service_id,'to_id'=>$to_id,'payment_type'=>"微信",'payment_price'=>$total_fee,'payment_time'=>time())); if($this->Consult_model->edit_consult(array('state'=>0),$to_id)){ $this->ci_wechatpay->response_back(); }else{ $this->ci_wechatpay->response_back("FAIL");//告知微信我失败了继续发 } //echo '<script>window.location.href="'.site_url('Patient/consult_info').'?consult_id='.$to_id.'"</script>'; }
}
}
}